Sudden severe morning sickness??

I am 8 weeks + 2 days with my 6th baby. For a few weeks now I've had occasional to frequent nausea, but have only vomited a total of maybe 4-5 times since my + pregnancy test. Today I am nauseas all day and night and have thrown up more times than I can count (15++ at least).  Not keeping any food or water down. But, no other symptoms of being sick or the flu or something besides pregnancy. Has anyone else had it hit so suddenly & strongly like the this? If it's still the same in the morning I'm going to call my doctor. I've never had this & this is my 7th pregnancy.