All things considered, these were zero risk events or very close to zero. First, even in Thailand, the chance your partner had HIV is low, probably under a 1% chance. With entirely unprotected vaginal sex with an infected female, your chance of being infected is under one in 2,000. So combining that with a 1% chance she had HIV, your risk of infection probably was in the ballpark of 1 in 200,000. Even with the semi-protected first episode, if we estimate the attempted condom use has 50% protective, your odds of infection become one chance in 400,000. Your risk of other STIs was generally higher, but still on the low side.

As for your symptoms, they really don't fit will with a new HIV infection, which is not a likely cause of "stomach discomfort/bloating" as the main or only symptom. Absence of genital area sores, penile discharge, and painful urination after almost 3 weeks also makes gonorrhea, chlamydia, herpes and syphilis unlikely -- although not quite zero risk. 

"What to do from here?" Maybe nothing; all in all, the odds you have anything at all is low enough that testing can be considered optional, at least from a medical/risk standpoint. However, you wouldn't be here if you weren't worried -- and reassurance is a valid reason for testing even when the risk is nil. Assuming you would like the reassurance of negative test results, you could have a conclusive HIV test now with an HIV PCR RNA test (also called "viral load" test). Or wait til 4 weeks after the event and have a 98% conclusive HIV AgAb test (a lot less expensive -- plus another one at 6 weeks to make the result 100% conclusive. For other STDs, I would advise a urine gonorrhea/chlamydia test now and a syphilis blood test at 6 weeks. You can expect negative results on all of these.

FYI, you also may like to know that in the 21 years of this and our preceding forum, with thousands of questions from persons worried about HIV after a possible exposure, nobody has yet tested positive. You won't be the first. If or when it finally happens, it will not be from a near zero risk exposure like yours, but from a genuinely high risk event; think unprotected anal between two men, for example. (There also have been very few who reliably reported they acquired other STDs.)

Would this change your risks assessments?