Feel like I'm pregnant but 3 tests have been negative?

Ok, I have two children already aged 10 and 15 and felt the same way when I was pregnant with them. It seemed like almost instantly after conceiving I just knew that I was pregnant. Around the 11th of July I started feeling the same way. My became really sore for a couple days then went away so I figured it was pre-menstrual. I have been extra moist lately, extremely hot(but it is summer in california), getting a sort of cramping sensation more like muscle tightening for about 2 weeks now, yesterday my and started getting sore again, and today I noticed i got random tingling sensations in my twice. I took 2 home early detection pregnancy tests on the 15th and 16th but both were negative. I then went to the doctor and had a blood test on the 17th and that was negative but for some reason I still have this overwhelming feeling that I may be pregnant. My period was supposed to come yesterday so I guess I will just wait about 3-4 days and re-test if it comes back negative just except it. What is weird also is that with both my previous children the test almost instantly turned positive when I took them. I am 33 now and wondering if these could all be signs of early menopause