Conclusion
The major link between STDs and HIV is that STDs increases your risk of contracting HIV. And having both makes it easier for you to spread the disease to your partner. Get tested immediately if you suspect that you have contracted any of the diseases. The earlier you begin treatment the better.
References;
[1] https://www.cdc.gov/
[2] https://www.who.int/news-room/fact-sheets/detail/sexually-transmitted-infections-(stis)
[3] https://www.healthline.com/health/gonorrhea
[4] https://www.healthline.com/health/std/chlamydia
[5] https://www.who.int/news-room/fact-sheets/detail/hepatitis-b
[6] https://www.who.int/news-room/fact-sheets/detail/hepatitis-c
[7] https://www.mayoclinic.org/diseases-conditions/hiv-aids/symptoms-causes/syc-20373524
[8] https://www.hiv.gov/hiv-basics/hiv-prevention/using-hiv-medication-to-reduce-risk/post-exposure-prophylaxis
[9] https://www.cdc.gov/hiv/risk/prep/index.html