What Causes Excessive Sweating Along With Dry Heaves And Nausea?

My husband and I retired and took our sailboat from TX to MA. Since our arrival on the East Coast over a yr 1/2 ago I have on accasion thrown up so hard and sweat real bad, dry heave and then let out a foam whitish substance. I get nausea from time to time but what has me real worried is that my stool hasn t been normal. Before I was almost always constipated but now for 1 1/2 yrs it has been runny and on time every morning, as well as.an emergency. I have no abdominal pain though, which is strange. I have a great eating habits that haven t changed, no yellow in the eyes or skin. I am severely anemic so I have to take iron pills (65mg daily) so I can t check the color. I have changed my diet to fresh veg and more red meat, I take daily vitamins and started to take probiotics. (For 3days) I have read that there s a thing called movers illness? Something about my body could just not be use to what s up here in the air or water. Is that a factor I am concerned though am not close to my doctor.... What s ur opinion doc? Also one more issue.... My husband is 51. He has a Huge lump on the bone on the top of his spine. Between the shoulders just below his neck. The lump isn t real hard more soft. Stress ball squishy. It got small but then gets big again. He has a mole on his bum too that he can t sit on that just appeared. What do u think??