Hey...I'm silent killer's GF..and he just told me about this lil forum...so yeah
my answer...
Okay first of all...its probably not STD's...but i'm sure u wud know if you have it if your gf has an STD, which must be Gonorrhea, if any other...becuz thats one of the common STD's that fit ur symptoms. Usually STD symptoms include itching and burning of the "rod" ...becuz it is the one that goes in, not ur twins. Hmm...now if u haf gone under...i'm also sure ur mouth wud be full of sores if ur gf had it, so you probably didn't get it from her.
2nd of all...its probably from 5-10 times of doing it /week....5 is okay...but 10 is really cutting it.
I remember going for 4 in one day...and the next day i dont' think my bf cud walk haha...and personally i don't think its all that good...the best sex comes from fewer sex really
+ITS PAINFUL FOR ME TOO...i mean eventually my juices were not enuf HAHAH
-one reason for ur pain is probably becuz when u finish--> there is a cord/ muslce that attatches ur twins to ur body, which pulls it up tight to ur body (sqeeeze)....now if the case is 5-10 times a weeks...that is probably why ur experiencing pain.
-another is mayb ur just banging too much...slow it down...haf sum intimate sex
That's about it...
if ur worried check a Gynecologist...or even family doctor...they are understanding.
Thats it
oh and...sex is good