Strange heavy feeling in vagina before period pelvic pain sick feeling

I am 34 years old and for the past 3 months I have had pelvic pain which is like a pinching pain in my pelvic bone both sides..also for the past 3 months my periods have had larger than usual blood clots. I am due on in a few days and today u have a strange feeling that is hard to explain like a really heavy feeling in my vagina almost feels like there is something stuck up there the pelvic pain is still there and I also have felt abit sick and dizzy today.. for the past month i have had bad coccyx pain and back pain and numbness and heat sensations in buttox and legs.. i had a smear test done 2 months ago coz of the pelvic pain but results still haven't come back doc said they are taking upto 16 weeks to come back! I get bad anxiety leading upto my period due to blood clots they really freak me out as I hate the feeling of them coming out. What could this be? Has anyone else had This? The doc said my coccyx pain and numbness etc could be due to nerve damage could the period thing also be due to nerve damage?