Is this normal

Im almost 35 weeks pregnant. I've been getting bad headaches that won't go away and I've exhausted. I've been feeling like I have to go to the bathroom (#2) constantly it really hurts, some times I cajt even go to the bathroom even though for the last like 3 days I've been feeling the need to go about 8 times at day at least and I've been very itchy everywhere with severe heart burn. Is this normal or should I go to the hospital my doctor call me a while ago saying I needed to be seen asap because of symptoms but then they canceled my last 2 appointments because of an emergency in the clinic. What should I do this is my 2nd baby and this is starting to scare me