Do these sound like symptoms of an ectopic pregnancy or something else?

I've been given a basic pelvic exam three times in the past two months for the following symptoms:

1. Bled twice well over a week after my period was over. Once was a quick, heavy gush of blood, the other was light spotting over about 4 hours.

2. I have had bouts of nausea, usually at night but sometimes not.

3. Episodes of lightheadedness.

4. Gaining weight rapidly without eating more than usual or exercising less. I've gained 5 pounds in one week.

5. Feeling very bloated and heavy, abdomen looks swollen.

I have another doctors appointment on Tuesday. I am assuming this time they will do a blood test for pregnancy as the other 2 times they only did urine, which were negative. Hoping she will schedule an ultrasound.

Thanks for your input in advance. Just nervous that if it is an ectopic, the tube will burst before I get to the doctor.