Im not sure whats happening

The past month or two, when im supposed to get my period but its like only one day and its basically not even a period. Its just spotting for about an hour or so. My boyfriend felt on my stomach a few nights ago and said it was hard like i was pregnant kinda hard and now has me taking pregnancy tests. But the two that i've took said i wasnt pregnant. Ive been eating stuff i dont usually like or eat. I can barely smoke cigarettes now because it smells weird or makes me feel sick. I feel like dying every morning but i don't throw up or anything. My smelling senses are also on high alert all the time. The stuff that usually smells good to me, smells bad sometimes. And ive also smelled stuff but it was never around. Mustard is a big one. I smell it alot anywhere i go. Im also big on pickles and chocolats milk now and i never was. Can anybody help me? :/