Left bum discomfort after dilator and sex

I have not been having regular sex or using my dilator on a regular basis. I did not use my dilator for 4 months. When I did use it I ended up having some bleeding. I was checked out by my Mayo P.A., radiation onco doc and oncologist NP.  They said everything looked Great. They stated the bleeding was from adhesions. Well, just went back to using my dilator on a regular basis and also had sex for the first time in 6 weeks. 10 minutes after sex I had a electric shock  like feeling in my lower leg and foot. It went away after 15 minutes or so. i also had a slight discomfort in my left butt. That went away within 8 hours or so. 

I just used my dilator tonight. I got the same tingling feeling in my left leg again!  Its very slight! Also had sex last night. No leg issues but having some left sided butt discomfort. I will not I played tennis yesterday hitting balls for over an hour. Not sure if that is causing the discomfort today or not. I did have back discomfort last month which started after lifting and increased after intercourse.  I stopped both and the discomfort went away in a couple of days.  

Has anyone experienced this?  Is buttock pain associated with something sinester?  

I recall being at the gym months ago and feeling a pull in my lower leg back  it acts up every now and then.  I also had a ton of blood work done last month  My ca125 was 10.2  my last ct of the abdomen and pelvis was in July  

Thanks so much